When I used [email protected]锛宼here was an error "TypeError: Cannot convert undefined or null to object".
It seems [email protected] is not compatible with Vue.Draggable.
Vue.Draggable uses "this.$attrs" in its render function, unfortunately $attrs is introduced with Vue 2.4.
I have the same problem and my version of vue project is 2.3.4.
But i'm getting this error with 2.23.2 version of vuedraggable:
see:

Most helpful comment
It seems [email protected] is not compatible with Vue.Draggable.
Vue.Draggable uses "this.$attrs" in its render function, unfortunately $attrs is introduced with Vue 2.4.